Acer AT4220A Service Manual page 69

HDMI No Sound
HDMI Cable HDMI Cable
plug in ? plug in ?
Read EDID DATA Read EDID DATA
EDID Data EDID Data
Normal ? Normal ?
Sound output? Sound output?
Chapter 3
L
no
Check HDMI cable or Check HDMI cable or
Replacement HDMI CABLE Replacement HDMI CABLE
no
Write EDID data Write EDID data
no
Replacement Main/B Replacement Main/B
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